Clean up the scanner directory

dart/lib/compiler/implementation/scanner/vm_scanner_bench.dart

Index: dart/lib/compiler/implementation/scanner/vm_scanner_bench.dart
diff --git a/dart/lib/compiler/implementation/scanner/vm_scanner_bench.dart b/dart/lib/compiler/implementation/scanner/vm_scanner_bench.dart
deleted file mode 100644
index f02af1cd4a2e7c19cd3bf909c0bdb52be34fb2be..0000000000000000000000000000000000000000
--- a/dart/lib/compiler/implementation/scanner/vm_scanner_bench.dart
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#library('vm_scanner_bench');
-#import('dart:io');
-#import('scannerlib.dart');
-#import('scanner_implementation.dart');
-#import('scanner_bench.dart');
-#import('../../../utf/utf.dart');
-#import('../util/characters.dart');
-#source('byte_strings.dart');
-#source('byte_array_scanner.dart');
-
-class VmScannerBench extends ScannerBench {
-  int getBytes(String filename, void callback(List<int> bytes)) {
-    var file = (new File(filename)).openSync(FileMode.READ);
-    int size = file.lengthSync();
-    List<int> bytes = new ByteArray(size + 1);
-    file.readListSync(bytes, 0, size);
-    bytes[size] = $EOF;
-    file.closeSync();
-    callback(bytes);
-    return bytes.length - 1;
-  }
-
-  void checkExistence(String filename) {
-    File file = new File(filename);
-    if (!file.existsSync()) {
-      print("no such file: ${filename}");
-    }
-  }
-
-  Scanner makeScanner(bytes) => new ByteArrayScanner(bytes);
-}
-
-main() {
-  new VmScannerBench().main(argv);
-}